Open Source · language

Use Yi Lightning with Rust

Updated 2026-05-21 · By XALEN

How to use Yi Lightning (Open Source, 200B MoE) with Rust. Install, authenticate, and make your first API call in minutes. Working code example included.

Model

Yi Lightning

200B MoE · 128K context · $0.04 input

Framework

Rust

language · cargo add async-openai

1. Install

cargo add async-openai

2. Code

use async_openai::{Client, config::OpenAIConfig, types::*};

#[tokio::main]
async fn main() {
    let config = OpenAIConfig::new()
        .with_api_key("xln_test_YOUR_KEY")
        .with_api_base("https://api.xalen.io/v1");
    let client = Client::with_config(config);

    let request = CreateChatCompletionRequestArgs::default()
        .model("yi-lightning")
        .messages(vec![ChatCompletionRequestUserMessageArgs::default()
            .content("Hello from Rust!").build().unwrap().into()])
        .build().unwrap();

    let response = client.chat().create(request).await.unwrap();
    println!("{}", response.choices[0].message.content.as_ref().unwrap());
}

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Last updated: 2026-05-21